One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(6,9)(7,11)(13,14,16,18)(15,17,19,20)(21,22,27,32)(23,33,35,30)(24,31,26,29)(25,28,34,36)(5,6,8,9)(7,10,11,12)(13,15,16,19)(14,17,18,20)(21,23,27,35)(22,28,32,36)(24,25,26,34)(29,33,31,30)(5,7,8,11)(6,10,9,12)(15,19)(17,20)(21,24,27,26)(22,29,32,31)(23,34,35,25)(28,30,36,33)(2,4)(6,9)(10,12)(21,25,26,35,27,34,24,23)(22,30,31,28,32,33,29,36)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.